The Impact of Microearthquakes Induced by Reservoir Water Level Rise on Stability of Rock Slope

Li, Dongliang; Liu, Xinrong; Li, Xingwang; Liu, Yongquan

doi:10.1155/2016/7583108

Cited by 8 publications

(6 citation statements)

References 25 publications

(25 reference statements)

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“…Srikrishnan et al [75] used FLAC3D to study the failure mechanism of the slope under earthquake loads. Probabilistic statistics and FLAC3D were used to analyze the dynamic stability and failure mechanism of the slope [76]. FDM plays a certain role in dynamic stability analysis.…”

Section: Finite Difference Methodsmentioning

confidence: 99%

Dynamic Stability Analysis of Rockmass: A Review

Dong

Wang

et al. 2018

Advances in Civil Engineering

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ere are a series of human or natural activities, including earthquakes, explosions, and rockbursts, which have caused a number of safety accidents in geotechnical engineering. is review paper summarized the theories and methods for dynamic stability analysis of rockmass. First, numerical simulation methods, including finite element method (FEM), discrete element method (DEM), finite difference method (FDM), boundary element method (BEM), discontinuous deformation analysis method (DDA), and numerical manifold method (NMM), are summarized. Second, the laboratory experiments, containing shaking table test, split-Hopkinson pressure bar test (SHPB), improved true-triaxial test, dynamic centrifugal model test, acoustic emission (AE) technique, and dynamic infrared monitoring, are considered. ird, the in situ tests including microseismic (MS) technique, velocity tomography, stress-strain monitoring, and electromagnetic radiation monitoring are considered. Finally, some comprehensive analysis methods based on statistical theories are also provided. It is pointed out that the study foundation for the dynamic stability of rockmass is weak to explain the mechanism. So, a set of general comprehensive theories integrating the different methods, including theoretical analysis, numerical methods, laboratory experiments, and in situ tests, should be completely established. is is the most effective way for further investigation.

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Section: Finite Difference Methodsmentioning

confidence: 99%

Dynamic Stability Analysis of Rockmass: A Review

Dong

Wang

et al. 2018

Advances in Civil Engineering

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“…The highest water level is basically 1–2 m away from the top of the slope ( Figure 2 ). Slope collapse is closely related to water [ 32 , 33 , 34 ]. In the case of water, the slope rock mass cannot remain stable even if the slope angle reaches the natural angle of the repose of the rock.…”

Section: Analysis On the Deformation Mechanism Of The Shallow Layer O...mentioning

confidence: 99%

Shallow Failure of Weak Slopes in Bayan Obo West Mine

Wang

Yan

Qu³

et al. 2022

IJERPH

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The slope stability of large open-pit mines has always been a concern and the analysis of large-scale slope landslides is a focus. However, shallow failure in soft rock slopes also has a serious impact on safe production. The northern slope of Baiyunebo West Mine has many shallow landslides in the final slope, resulting in damage of the maintenance channel of the belt transportation system, which has a serious impact on the safety of production. In order to reduce the shallow failure in weak rock slope, it is necessary to analyze the behavior and characteristics of shallow failure in weak rock. Firstly, the mechanical parameters of the intact rock were obtained by using the exploration data; secondly, through the analysis of blasting-damage range, the distribution characteristics of fractures after the failure of weak rock were obtained. Finally, through theoretical analysis, numerical simulation, surface displacement monitoring and on-site shallow-failure case analysis, the deformation and characteristics of shallow failure of weak rock slope in West Mine were obtained. It was found that the mechanical parameters of rock mass strength on the surface of weak rock slope and the original rock were quite different after mining disturbance. The mode of failure of shallow weak rock slope in the West Mine was creep-cracking; the numerical modelling analysis was carried out by using the assignment method of shallow lithology weakening and gradual change, which is more in line with the deformation characteristics of weak rock slope in West Mine. The lower deformation of the soft rock slope in West Mine is 3–5 times that of the upper deformation. The research results are helpful to understand the influence of blasting on the stability of soft rock slope. At present, West Mine has started to adjust blasting parameters according to the research results, so as to reduce the excessive damage of blasting to rock mass, so the stability of the slope is improved.

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“…In short, the weakening effect of rainfall in ltration and blasting vibration on slope stability is synergistic promotion rather than simple superposition. 5 Failure Mechanism Of Bank Slope Deformation Under Rainfallblasting Action…”

Section: Safety and Stability Of Slope Under The Combined Action Of Rainfall And Blastingmentioning

confidence: 99%

“…Many common reservoir landslides are caused by factors such as seasonal rainfall (Li et al 2010;Wu et al 2010) and changing reservoir water levels (Yin et al 2016). The frequent microseismic events after the Three Gorges Dam impoundment are also one of the key factors leading to the dynamic instability of the slope bank (Li et al 2016;Yang et al 2020). Hence, when studying the bank slope stability of the reservoir, the coupling effect of multiple factors should be established simultaneously to avoid the analysis from a single aspect.…”

Section: Introductionmentioning

confidence: 99%

Failure mechanism and stability analysis of bank slope deformation under the synergistic effect of heavy rainfall and blasting vibration

Ming

et al. 2021

Geotech Geol Eng

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Underwater drilling blasting technique is often adopted to clear away the obstructed reef and dredge-cut in the mountainous waterway dredging engineering. However, the vibration of the underwater blasting and excavation of the riverbed has a certain in uence on the stability of bank slopes. Combined with the partial bank collapse phenomenon in the waterway regulation project between two dams in the Three Gorges reservoir area, the change of pore water pressure of unsaturated soil under heavy rainfall and the increase of permanent displacement of soil under blasting vibration in the reservoir area are discussed. This paper explains the weakening effect of rainfall in ltration and blasting vibration on the stability of the bank slope. By studying the law of slope failure deformation under the separate action and coupling action, it is found that rainfall in ltration promotes the increase of slope permanent displacement and the blasting vibration enlarges the in ltration area of the soil, which demonstrated the accelerated failure mechanism of the rainfall-blasting slope.

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The Impact of Microearthquakes Induced by Reservoir Water Level Rise on Stability of Rock Slope

Cited by 8 publications

References 25 publications

Dynamic Stability Analysis of Rockmass: A Review

Dynamic Stability Analysis of Rockmass: A Review

Shallow Failure of Weak Slopes in Bayan Obo West Mine

Failure mechanism and stability analysis of bank slope deformation under the synergistic effect of heavy rainfall and blasting vibration

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